I have made a perler bead artwork, about 15x30cm, and now I want to mount it. I would like it to be mounted in some kind of white rubber/glue like material, so that the perler beads are partly covered by the material. I.e. I would need a layer of material that is maybe 2-3 mm thick (about 1/8"). Is there some kind of glue I could use, or maybe glue mixed with paint? Here is a perler bead artwork glued onto a painted canvas: http://img.photobucket.com/albums/v478/kaptenen/Beads/f15e2901.jpg . I want something like that, but with a really thick layer of paint (and preferably something cheaper than artist's paint.

I feel that I haven't been writing things in English for a while. Sorry if it's hard to understand what I mean. Feel free to ask. And thank you for any help.